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ADDS-21XX-SW-PC データシート(PDF) 11 Page - Analog Devices

部品番号 ADDS-21XX-SW-PC
部品情報  ADSP-2100 Family Development Tools
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
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ADDS-21XX-SW-PC データシート(HTML) 11 Page - Analog Devices

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ADDS-21xx-TOOLS
REV. B
–11–
An alternate approach is required for the TQFP chip package.
Because of the extremely low profile of the surface mount
TQFP package, it is not practical to use a snap-on adaptor or
probe. Thus, in order to use the EZ-ICE, it is necessary to
provide a pair of header connectors on the target board that the
ADDS-21xx EZ-ICE board can plug directly onto. Extra space
around the adaptor and extra through-holes to the PQFP
package are not required to let you use the same PCB in
production. Dimensional requirements for placing the headers
is also shown in Figure 2.
ADSP-2181
There is no need for a surface mount adaptor for the ADSP-
2181 EZ-ICE. Instead, the ICE-Port Emulator Interface allows
for a simple 14-pin connector interface between the target board
and the EZ-ICE.
DESIGNING AN EZ-ICE COMPATIBLE TARGET
SYSTEM FOR THE ADSP-2181 AND THE ADSP-2171
ADSP-2181 Target System Requirements
The ADSP-2181 has on-chip emulation support and a special
set of pins that interface to the EZ-ICE called the ICE-Port.
The ICE-Port allows in-circuit emulation without replacing the
target system’s processor or overriding it with a probe, requiring
only a simple 14-pin header connector to interface to the EZ-
ICE (see Figure 3).
Table IV lists the pins and functions used in the ADSP-2181’s
ICE-Port emulation interface.
Table IV. ADSP-2181 ICE-Port Emulation Interface
Pin
Description
BR
Bus Request
BG
Bus Grant
RESET
Reset
GND
Ground
EBR
Emulator Bus Request (emulator-only*)
EBG
Emulator Bus Grant (emulator-only*)
ERESET
Emulator Reset (emulator-only*)
EMS
Emulator Memory Space (emulator-only*)
EINT
Emulator Interrupt Request (emulator-only*)
ECLK
Emulator Clock (emulator-only*)
ELIN
Emulator Data In (emulator-only*)
ELOUT
Emulator Data Out (emulator-only*)
EE
Emulator Enable (emulator-only*)
NOTE
*These ADSP-2181 pins must be connected only to the ICE-Port connector in
the target system. These pins have no function except during emulation. Keep
all traces as short as possible; no longer than 3 inches.
GUI Interface
EZ-ICE software uses a Graphical User Interface (GUI) to
increase development productivity by making your data easier to
view and manipulate—without switching between screens—
when debugging. In addition, you can obtain on-line help for
the currently selected window. The GUI user interface design is
the same one used with the ADSP-2100 Family Simulator
software, making both tools easier to use.
Clock Speed
EZ-ICE runs at full speed. There is no degradation of
processor performance other than BR, BG, and RESET, which
are slightly delayed. A jumper is used to select either the target
system clock or the EZ-ICE clock. The oscillator socket lets you
use other oscillator devices to achieve different clock speeds.
Memory
The ADSP-2101, ADSP-2111, and ADSP-2171 EZ-ICE each
have 8K
× 24-bit overlay program memory and 16K × 16-bit
overlay data memory. You can either run programs from target
system memory, emulator overlay memory, or from a combination
of both. The overlay memory option is jumper-selectable.
Additional Equipment Required
EZ-ICE requires a +5 V dc power supply capable of supplying
1 A of current.
3-Volt Emulation
The 3-Volt Emulation Converter Board may be used with the
ADSP-2101 EZ-ICE to enable emulation of ADSP-2103 (3 V)
systems.
SURFACE MOUNT ADAPTORS
ADSP-2101/ADSP-2105/ADSP-2115
Several surface mount adaptors are available for emulation of
the ADSP-2101. For example: for the 68-pin PLCC package of
the ADSP-2101 and ADSP-2105, a PGA-to-PLCC adaptor is
available from the vendors listed at the end of this data sheet.
For the 80-pin PQFP package of the ADSP-2101, a 68-pin
PGA to 80-pin PQFP adaptor is also available.
The ADDS-2101-PGA/PQFP, a surface-mountable PGA-to-
PQFP adaptor, provides a footprint that exactly matches the 80-
pin package. This solution does not require extra space around
the adaptor or an extra through hole to the PQFP package to let
you use the same PCB in production. The PGA-to-PQFP
adaptor is surface mounted in the usual manner, and the PGA
connector of the ADSP-2101 EZ-ICE or ICE can be directly
plugged in.
ADSP-2111
The ADDS-2100-PGA/PQFP, a surface-mountable 101-pin
PGA to 100-pin PQFP adaptor, matches the ADSP-2111
package footprints. This solution does not require extra space
around the adaptor, and you can use the same PCB in
production. The PGA-to-PQFP adaptor is surface mounted in
the usual manner, and the PGA connector of the ADSP-2111
EZ-ICE can be directly plugged in.
ADSP-2171
The ADSP-2171 EZ-ICE Emulator is designed for compatibil-
ity with the surface mountable 128-pin PQFP package using an
adaptor card which plugs onto the ADDS-21xx EZ-ICE board
and then snaps onto the PQFP chip. This is illustrated in Figure
3. Extra space should be allowed around the PQFP chip to
allow clearance for the adaptor.


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